Added classes to enable session sync functionality.

chrome/browser/views/bookmark_bar_view_unittest.cc

Index: chrome/browser/views/bookmark_bar_view_unittest.cc
diff --git a/chrome/browser/views/bookmark_bar_view_unittest.cc b/chrome/browser/views/bookmark_bar_view_unittest.cc
index 61249b66c2f756d5ce350865820a379faa2fa4e4..29be6788f706b663170607b84a01d958586cfe02 100644
--- a/chrome/browser/views/bookmark_bar_view_unittest.cc
+++ b/chrome/browser/views/bookmark_bar_view_unittest.cc
@@ -11,11 +11,9 @@
 class BookmarkBarViewTest : public BrowserWithTestWindowTest {
  public:
   BookmarkBarViewTest()
-      : ui_thread_(ChromeThread::UI, message_loop()),
-        file_thread_(ChromeThread::FILE, message_loop()) {}
+      : file_thread_(ChromeThread::FILE, message_loop()) {}
 
  private:
-  ChromeThread ui_thread_;
   ChromeThread file_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkBarViewTest);